Question about Shimano 24 Speed Road Racing Bike Bicycle Modell Rs888
You don't mention which shifter(s) malfunction or if you're even pedaling the bike while shifting (I make NO assumptions).
If you operate the inner shift lever (NOT the brake lever) on each side through several clicks that should RELAX any tension in the shifter cables. Then if you pick the bike up and pedal it forward a couple of turns the front shifter should drop the chain the the lowest chainring and the rear derailleur should shift out the the smallest cog.
With the bike suspended (say, hanging from a low tree branch by the tip of the seat) you should be able to turn the cranks and manually pull sideways on either exposed shifter cable where it runs down along the downtube then release it.
This should cycle each respective derailleur through its entire range. If the cables don't travel sufficiently in this manner, the shifters will never make them do it either.
Perhaps you could CALL the Bike Shop and they would talk you through a quick operational check.
Posted on Apr 27, 2010
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Posted on Jan 02, 2017
Go to http://techdocs.shimano.com/techdocs/index.jsp
Search in drop down list to go to all tiagra items and identify your particular components. Shimano are good at numbering their parts and you should find the number you seek on the bicycle component. You will usually be able to download an exploded parts diagram and service instructions. The service instructions are prefixed by the letters SI.
Posted on Nov 22, 2009
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